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fix: [sftp] allow same group usage amongst different users

- allow to reuse several time same group for different user
- check that if using an existing group from system, gid is the same
- prevent conflicting of name/gid declaration
framadate
Valentin Lab 5 years ago
parent
commit
3d6c5a0898
  1. 3
      sftp/hooks/init
  2. 66
      sftp/lib/common

3
sftp/hooks/init

@ -19,9 +19,10 @@ set -e
service_def=$(get_compose_service_def "$SERVICE_NAME")
existing_gids=($(cached_cmd_on_base_image "$SERVICE_NAME" getent group | cut -f 1,3 -d :))
users_def=$(echo "$service_def" | shyaml get-value options.users 2>/dev/null) || true
build_script="$(make_build_script "$users_def")" || exit 1
build_script="$(make_build_script "$users_def" "${existing_gids[@]}")" || exit 1
echo "build-script:" >&2
echo "$build_script" | prefix " $GRAY|$NORMAL " >&2
docker_update "$SERVICE_NAME" "$build_script" -v "$SERVICE_DATASTORE/home":"/home" || exit 1

66
sftp/lib/common

@ -9,22 +9,33 @@ make_build_script() {
touch "$cache_file" || return 1
return 0
fi
## remaining arguments are the group_label:gid list that should be
## avoided for creation (because already existent ?)
shift
local users_def="$1" \
code fixed_groups_code groups_code volume_keys \
created_groups first_group
local code fixed_groups_code groups_code \
created_groups first_group gids
if [ -z "$users_def" ]; then
return 0
fi
e "set -eux"$'\n'
code=""
fixed_groups_code=""
groups_code=""
volume_keys=()
gids=()
declare -A created_groups
for group in "$@"; do
if [[ "$group" != *":"* ]]; then
err "Invalid group specification given from script"
return 1
fi
gid=${group##*:}
gids+=("$gid")
group_label=${group%%:*}
created_groups[$group_label]="$gid"
done
while read-0 user user_def; do
code+="mkdir -p \"/home/$user\""$'\n'
@ -34,28 +45,51 @@ make_build_script() {
##
first_group=
groups=()
first=1
while read-0 group; do
[ "${created_groups[$group]}" ] && continue
gid="unspecified"
if [[ "$group" == *":"* ]]; then
gid=${group##*:}
group=${group%%:*}
fixed_groups_code+="addgroup -g \"$gid\" \"$group\""$'\n'
if ! [[ "$gid" =~ ^[0-9]+$ ]]; then
err "gid part (after ':') should be numerical not '$gid'."
return 1
fi
group_label=${group%%:*}
else
groups_code+="addgroup \"$group\""$'\n'
group_label="$group"
fi
created_groups[$group]=1
if [ "${created_groups[$group_label]}" ]; then ## already met this group
## double-check we did not give conflicting gid information
if [[ "${created_groups[$group_label]}" != "$gid" ]]; then
err "Conflicting setup: using existing group '$group_label' for user '$user'" \
"with different GIDs specification" \
"(previous was ${created_groups[$group_label]}, current one is $gid)."
return 1
fi
else
if [[ "$gid" != unspecified ]]; then
## check not already used
if [[ " ${gids[*]} " == *" $gid "* ]]; then
err "gid $gid is alreay used and is not available."
return 1
fi
fixed_groups_code+="addgroup -g \"$gid\" \"$group_label\""$'\n'
else
groups_code+="addgroup \"$group\""$'\n'
fi
created_groups[$group_label]="$gid"
fi
echo "First: $first" >&2
echo "First: $group_label" >&2
if [ "$first" ]; then
first_group="$group"
echo "FG1: $first_group" >&2
first_group="$group_label"
first=
else
remaining_groups+=("$group")
remaining_groups+=("$group_label")
fi
groups+=("$group")
done < <(echo "$user_def" | shyaml get-values-0 groups 2>/dev/null)
##
## User create commands
##

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